| 摘要 |
PROBLEM TO BE SOLVED: To provide a drum type game machine provided with a function capable of more effectively preventing illegal actions or the like, and a main board provided in the drum type game machine. SOLUTION: A slot machine 100 with a discharge ball rate setting change function is provided with a setting switch BO and a setting switching button CS for changing the setting of a ball discharge rate and the main board 700 arranged on the back side of a case body 102 for controlling the operation of the slot machine 100, and the setting switch BO and the setting switching button CS are directly installed to the main board 700. Thus, it is very difficult to operate the setting switch BO and the setting switching button CS on the main board 700 on the back side of the case body 102 even when a person taking the illegal action tries to illegally operate it in the state of slightly opening a front door. COPYRIGHT: (C)2005,JPO&NCIPI
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